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Optimal tapers for compensating losses in plasmonic waveguides

Davoyan, Artur; Shadrivov, Ilya; Kivshar, Yuri; Gramotnev, Dmitri

Description

We consider propagation of surface plasmon polaritons in two-dimensional tapered slot waveguides. We derive an analytical formula for the change of the amplitude of a plasmon mode due to tapering. We show that the taper leads to the field enhancement effectively compensating the mode attenuation due to losses. We obtain numerically the shape of the optimal function of the taper that provides exact loss compensation. (

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
URI: http://hdl.handle.net/1885/56963
Source: Physica Status Solidi: Rapid Research Letters
DOI: 10.1002/pssr.201004220

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